Bear Creek (Middle Titanotherium Beds): Chadronian, South Dakota
collected by T. C. Brown, F. B. Loomis 1903

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Perissodactyla - Brontotheriidae
Megacerops tyleri n. sp. Lull 1905
recombined as Brontops tyleri
from "head of Bear Creek ... 35 feet above the base" of a 200 ft Chadron section; see Mader 1989 (7 measurements)
Reptilia - Testudines - Geoemydidae
Chrysemys inornata n. sp. Loomis 1904
Loomis 1904
synonym of Echmatemys lativertebralis
"at the head of Bear Creek in Spring Draw Basin" underneath a "titanotherium skeleton" (possibly the Brontops specimen) (1 measurement)
see common names

Geography
Country:United States State/province:South Dakota County:Shannon
Coordinates: 43.9° North, 102.6° West (view map)
Paleocoordinates:45.2° North, 93.7° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Priabonian 10 m.y. bin:Cenozoic 3
*Period:Tertiary
Key time interval:Chadronian
Age range of interval:37.20000 - 33.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Chadron
Stratigraphic resolution:member
Lithology and environment
Primary lithology: "siliciclastic"
Environment:fluvial-lacustrine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collectors:T. C. Brown, F. B. Loomis Collection dates:1903
Collection method comments: Amherst College collection
Taxonomic list comments:relationship of unit to members of Clark and Beerbower 1967 unclear
Metadata
Database number:16900
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:2002-05-15 00:00:00 Last modified:2011-05-14 01:03:20
Access level:the public Released:2002-05-15 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2323. R. S. Lull. 1905. Megacerops tyleri, a new species of titanothere from the Bad Lands of South Dakota. Journal of Geology 13(5):443-456 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
34289 F. B. Loomis. 1904. Two new river reptiles from the Titanothere beds. American Journal of Science 18:427-432 [J. Alroy/J. Alroy]